WO2019049962A1 - 免疫抑制性白血球吸着材料及び吸着カラム - Google Patents
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- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3206—Organic carriers, supports or substrates
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- B01J20/3217—Resulting in a chemical bond between the coating or impregnating layer and the carrier, support or substrate, e.g. a covalent bond
- B01J20/3219—Resulting in a chemical bond between the coating or impregnating layer and the carrier, support or substrate, e.g. a covalent bond involving a particular spacer or linking group, e.g. for attaching an active group
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- B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
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- A61M2202/0413—Blood
- A61M2202/0439—White blood cells; Leucocytes
Definitions
- the present disclosure relates to an adsorption material for immunosuppressive leukocytes and an adsorption column including the same.
- Leukocytes which are deeply involved in the immune function, are one of the blood components and are classified into lymphocytes, granulocytes and monocytes. Each white blood cell is further subdivided, for example, lymphocytes are classified into T cells, B cells, natural killer cells and the like.
- LAP Latency Associated Peptide
- LAP positive leukocytes are leukocytes bound to LAP and are known as immunosuppressive leukocytes.
- Drugs have been developed as a method to treat cancer, such as checkpoint antibodies, that block the signal of immunosuppression transmitted from cancer cells, but some patients suffer from autoimmune disease due to the side effects of the drug. It recognized.
- cell therapy is also being performed in which the patient's own white blood cells are used to eliminate cancer.
- a typical example is dendritic cell transfusion therapy in which a patient's dendritic cells are stimulated with cancer antigens outside the body and then returned to the patient to induce and treat cancer-specific killer cells (cytotoxic T lymphocytes).
- cancer-specific killer cells cytotoxic T lymphocytes
- the signal by which the cancer cells escape from the immune system is released to increase the patient's immunity, and it can be expected to suppress tumor regression and cancer progression.
- Patent Document 1 discloses, as a material for removing white blood cells, a filter characterized by the fiber diameter and bulk density of a non-woven fabric, specifically, the fiber diameter is less than 3 ⁇ m, and the bulk density is 0.15 g.
- a leukocyte removal filter comprising a non-woven fabric of more than 0.5 cm / cm 3 and not more than 0.50 g / cm 3 .
- Patent Document 2 discloses an adsorptive material characterized by fiber diameter, surface area, etc. Specifically, it comprises fibers with a fiber diameter of 0.5 to 10 ⁇ m and a surface area of 0.5 m 2 to 10 m 2 Disclosed is a cell adsorption column which is packed with less than the adsorbent, wherein the adsorbent packed volume is 100 ml or less.
- Patent Document 3 discloses an adsorptive material characterized by a ligand structure of an amino group, an amino group weight and the like.
- the present disclosure aims to provide an adsorbent material that selectively adsorbs immunosuppressive leukocytes.
- the present inventors contain a polyamine residue or aliphatic amine residue in a fibrous or particulate water-insoluble carrier, and by setting the diameter and arithmetic mean roughness of the fiber or particle within a predetermined range, It has unexpectedly been found that immunosuppressive leukocytes (particularly, LAP positive leukocytes) can be selectively adsorbed, and the present disclosure has been made.
- the immunity is that the shape of the water-insoluble carrier is a fiber or particle, the diameter of the fiber or the particle is 15 to 50 ⁇ m, and the arithmetic mean roughness of the surface of the water-insoluble carrier is 0.1 to 3.0 ⁇ m.
- Adsorbent material for inhibitory leukocytes. R 1 R 2 N-X-NR 3 R 4 ...
- X is a saturated or unsaturated aliphatic hydrocarbon group having 2 to 20 carbon atoms, or a saturated or unsaturated aliphatic hydrocarbon having 3 to 20 carbon atoms
- R 1 to R 4 are each independently a hydrogen atom or an alkyl group.
- NH 2 R 5 ⁇ Formula (2) [In formula (2), R 5 is a saturated or unsaturated aliphatic hydrocarbon group having 1 to 12 carbon atoms. ] NHR 6 R 7 ...
- R 6 and R 7 are each independently a saturated or unsaturated aliphatic hydrocarbon group having 1 to 12 carbon atoms.
- R 6 and R 7 are each independently a saturated or unsaturated aliphatic hydrocarbon group having 1 to 12 carbon atoms.
- [2] The adsorption material according to [1], wherein the nitrogen-containing compound contains a polyamine represented by the formula (1).
- [3] The adsorption material according to [1] or [2], wherein the nitrogen-containing compound is bound to the water-insoluble carrier via a linker.
- An adsorption column comprising the adsorption material according to any one of [1] to [5].
- an adsorbent material capable of selectively adsorbing and removing immunosuppressive leukocytes (particularly, LAP positive lymphocytes and LAP positive monocytes).
- the adsorption material according to the present embodiment relates to an adsorption material for adsorbing immunosuppressive leukocytes.
- the adsorptive material according to this embodiment includes the polyamine represented by Formula (1), the primary aliphatic amine represented by Formula (2), and the secondary aliphatic amine represented by Formula (3).
- a water-insoluble carrier to which one or more nitrogen-containing compounds selected from is bound.
- the shape of the water-insoluble carrier is a fiber or a particle, the diameter of the fiber or the particle is 15 to 50 ⁇ m, and the arithmetic mean roughness of the surface of the water-insoluble carrier is 0. 1 to 3.0 ⁇ m.
- the adsorbent material of the present embodiment can selectively adsorb immunosuppressive leukocytes.
- the adsorption material of the present embodiment preferably has an excellent adsorption rate to immunosuppressive leukocytes.
- Nonrogen-containing compound residue as used herein means a group obtained by directly or indirectly binding a nitrogen-containing compound to a water-insoluble carrier.
- polyamine residue means a group obtained by directly or indirectly bonding a polyamine represented by formula (1) to a water-insoluble carrier
- aliphatic amine residue means Or a group obtained by directly or indirectly bonding an aliphatic amine (also referred to as aliphatic amine) represented by Formula (2) or Formula (3) to a water-insoluble carrier.
- the nitrogen-containing compound is selected from polyamines represented by Formula (1), primary aliphatic amines represented by Formula (2), and secondary aliphatic amines represented by Formula (3).
- the nitrogen-containing compounds may be used alone or in combination of two or more.
- the nitrogen-containing compound is a polyamine represented by Formula (1).
- Formula (1) X is a saturated or unsaturated aliphatic hydrocarbon group having 2 to 20 carbon atoms, or a saturated or unsaturated aliphatic hydrocarbon having 3 to 20 carbon atoms]
- R 1 to R 4 are each independently a hydrogen atom or an alkyl group. ].
- X is, for example, 2 to 20 (for example, 16 or less, 14 or less, 12 or less, 10 or less, 8 or less, 6 or less, 4 or less) carbon atoms It is a saturated or unsaturated aliphatic hydrocarbon group which it has.
- X is, for example, a saturated or unsaturated aliphatic hydrocarbon group having 3 to 20 (for example, 16 or less, 14 or less, 12 or less, 10 or less) carbon atoms It is a hetero atom-containing carbon chain in which 1 to 5 (for example, 1 to 3) carbon atoms are replaced by nitrogen atoms, and a hydrogen atom bonded to the nitrogen atoms is an alkyl group which may have an amino group.
- R 1 to R 4 are each independently a hydrogen atom or an alkyl group.
- the alkyl group has, for example, 1 to 6 (preferably 1 to 4) carbon atoms.
- the aliphatic hydrocarbon group may be linear or branched.
- the polyamine represented by the formula (1) is preferably a polyamine represented by any one of the following formulas (1-1) to (1-6).
- H 2 N- (CH 2 ) p 1 -NH 2 Formula (1-1) [Wherein, in the formula (1-1), p1 is an integer of 2 to 12 (preferably 2 to 6, preferably 2 to 5, or 2 to 4), and at least one of the hydrogen atoms of primary amino groups at both ends May be substituted with an alkyl group.
- p1 and p2 are each independently an integer of 2 to 5 (preferably 2 to 4, 2 to 3, 2), and the hydrogen atom of the secondary amino group is an amino group And at least one of the hydrogen atoms of the primary amino group at both ends may be substituted with an alkyl group.
- p1, p2 and p3 each independently represent an integer of 2 to 5 (preferably 2 to 4, 2 to 3, 2), and the hydrogen atom of the secondary amino group is Each of them may be independently substituted with an alkyl group which may have an amino group, and at least one of the hydrogen atoms of primary amino groups at both ends may be substituted with an alkyl group.
- p1, p2, p3 and p4 each independently represent an integer of 2 to 5 (preferably 2 to 4, 2 to 3, 2), and p1, p2, p3 and p4
- the hydrogen atoms of the secondary amino group may be each independently substituted with an alkyl group which may have an amino group, and the hydrogen atoms of the primary amino group at both ends And at least one of them may be substituted with an alkyl group.
- p1, p2, p3, p4, p5 and p6 are each independently an integer of 2 to 5 (preferably 2 to 4, 2 to 3, 2), and p1 and p2 , P3, p4, p5 and p6 have a sum of 15 or less, and the hydrogen atoms of the secondary amino group may be independently substituted with an alkyl group which may have an amino group, both ends At least one of the hydrogen atoms of the primary amino group of the above may be substituted with an alkyl group. ].
- the carbon atom number of the “alkyl group which may have an amino group” which can be bonded to the nitrogen atom of the secondary amino group is, for example, 1 to 6 And preferably 1 to 5, preferably 1 to 4, and preferably 1 to 3.
- the number of carbon atoms of the “alkyl group” which can be bonded to the nitrogen atom of the primary amino group at both ends is, for example, 1 to 6, preferably 1 to 6 It is five, preferably one to four, and preferably one to three.
- These “alkyl groups” are preferably linear or branched.
- Examples of the polyamine represented by the formula (1) include ethylenediamine, N-ethylethylenediamine, diethylenetriamine, N-ethyldiethylenetriamine, triethylenetetramine and tetraethylenepentamine. In addition, the following polyamines may be mentioned.
- the nitrogen-containing compound is a primary aliphatic amine represented by Formula (2) or a secondary aliphatic amine represented by Formula (3).
- NH 2 R 5 ⁇ Formula (2) [In formula (2), R 5 is a saturated or unsaturated aliphatic hydrocarbon group having 1 to 12 carbon atoms. ], NHR 6 R 7 ... Formula (3) [In Formula (3), R 6 and R 7 are each independently a saturated or unsaturated aliphatic hydrocarbon group having 1 to 12 carbon atoms. ].
- the aliphatic hydrocarbon group is preferably a linear or branched aliphatic hydrocarbon group, and a linear or branched chain -Like saturated aliphatic hydrocarbon groups are preferred.
- the carbon number of the aliphatic hydrocarbon group is preferably 1 to 8, preferably 1 to 6, and more preferably 1 to 4.
- aliphatic amines include monoalkylamines such as ethylamine, propylamine, butylamine, pentylamine, hexylamine, heptylamine, octylamine, nonylamine and decylamine; diethylamine, dipropylamine, dibutylamine, diheptylamine, Dialkylamines such as dioctylamine and dicyclohexylamine can be mentioned.
- nitrogen-containing compound examples include ethylamine, ethylenediamine, diethylamine, N-ethylethylenediamine, diethylenetriamine, N-ethyldiethylenetriamine, triethylenetetramine or tetraethylenepentamine.
- ethylenediamine, diethylenetriamine, triethylenetetramine or tetraethylenepentamine preferred are ethylenediamine, diethylenetriamine, triethylenetetramine or tetraethylenepentamine.
- the nitrogen-containing compounds are commercially available or can be produced by known methods or methods analogous thereto.
- a water-insoluble carrier to which a nitrogen-containing compound is bound means a water-insoluble carrier to which the above-mentioned nitrogen-containing compound is directly covalently bonded, or a water-insoluble carrier to which it is indirectly linked via a linker Encompass both.
- the water-insoluble carrier to which the nitrogen-containing compound is bonded includes one to which two or more different nitrogen-containing compounds selected from the above-mentioned polyamine and the above-mentioned aliphatic amine are bonded.
- a plurality of amino groups may be bonded to a water-insoluble carrier to form a crosslinked structure. That is, when a polyamine represented by the formula (1) is bonded to a water-insoluble carrier as a nitrogen-containing compound, when at least two of the amino groups in the polyamine bond to the water-insoluble carrier, a crosslinked structure is formed. .
- the nitrogen-containing compound is preferably bound to the water-insoluble carrier via the amino group (or nitrogen atom) in the compound.
- the nitrogen-containing compound When the nitrogen-containing compound is bonded to the water-insoluble carrier, depending on the bonding position in the nitrogen-containing compound, the nitrogen after the primary amino group, the secondary amino group, the tertiary amino group and / or the quaternary amino group are bonded It is present in the contained compounds.
- the polyamine represented by the formula (1) when the polyamine represented by the formula (1) is bonded to a water-insoluble carrier, depending on the bonding position in the polyamine, a primary amino group, a secondary amino group, a tertiary amino group and / or a quaternary amino group A group will be present in the polyamine after conjugation.
- the nitrogen-containing compound is preferably bound to the water-insoluble carrier via the amino group (or nitrogen atom) in the compound.
- the "amino group on a water insoluble carrier” is a concept including at least a primary amino group, a secondary amino group, a tertiary amino group and a quaternary amino group derived from the nitrogen-containing compound thus produced. is there.
- the “amino group on the water insoluble carrier” includes a linker-derived primary amino group, a secondary amino group, a tertiary amino group and a quaternary amino group.
- the “total amount of amino groups” means the total amount ( ⁇ mol) of primary amino group, secondary amino group, tertiary amino group and quaternary amino group on the water-insoluble carrier.
- the total amount of amino groups on the water-insoluble carrier is not particularly limited, and is, for example, more than 0 ⁇ mol / 5000 ⁇ mol or less per 1 g of the adsorption material.
- the total amount of amino groups on the water-insoluble carrier is, for example, the amount of primary amino groups, the amount of secondary amino groups, the amount of tertiary amino groups, by measuring the amino groups using acid-base back titration. And the sum of the amounts of quaternary amino groups (quaternary ammonium groups). That is, first, the adsorbent material and an excess amount of sodium hydroxide aqueous solution are added to a polypropylene container and sufficiently stirred at room temperature to desalt the amino group to which the salt in the adsorbent material is added. Next, the adsorbent material is thoroughly washed with ion exchange water until the solution becomes neutral, and dried until the weight change is 1% or less.
- the amino groups in the dried adsorbent material are reacted with an aliquot of a standard solution containing excess acid.
- the amount of acid left unreacted with the amino groups is then titrated with a standard solution containing a base.
- the total amount ( ⁇ mol) of amino groups can be determined. More specifically, the total amount of amino groups on the water-insoluble carrier can be determined by the method described in the following examples.
- the amount of nitrogen-containing compound residue can be determined, for example, by adjusting the amount of reactive functional group bound to the water-insoluble carrier, the type of nitrogen-containing compound, and the amount of nitrogen-containing compound used. Can be controlled.
- the bonding amount of the reactive functional group can be controlled, for example, by the type of reactive functional group or the type of solvent, and reaction conditions such as immersion temperature or immersion time.
- the water insoluble carrier comprises polyaromatic vinyl
- a crosslinker can also be used to control the possible attachment sites for reactive functional groups.
- the amount of the nitrogen-containing compound residue can be controlled by the kind of the solvent, the immersion temperature, the immersion time and the like in addition to the kind of the nitrogen-containing compound and the binding amount of the reactive functional group.
- Immunosuppressive white blood cells mean white blood cells having the function of suppressing the immune system.
- immunosuppressive white blood cells include LAP positive white blood cells.
- the adsorbent material according to this embodiment can preferably adsorb LAP-positive lymphocytes or LAP-positive monocytes, and LAP-positive CD4-positive lymphocytes, LAP-positive CD8-positive lymphocytes or LAP-positive CD11b.
- Positive monocytes can be preferably adsorbed.
- Water-insoluble carrier refers to a carrier that does not undergo shape change when immersed in water at normal temperature (25 ° C), and specifically, it has a weight change of 5% when immersed in water at 25 ° C for 1 hour It is preferable that it is the carrier which is the following.
- the material of the water-insoluble carrier is not particularly limited, and polyaromatic vinyl compounds represented by polystyrene, polyethersulfone, polysulfone, polyarylethersulfone, polyetherimide, polyimide, polyamide, polyphenylene sulfide, etc. Is preferably mentioned.
- the material of the water-insoluble carrier is commercially available or can be produced by a known method or a method analogous thereto.
- the water-insoluble carrier is preferably a polymeric material containing a polyaromatic vinyl compound (for example, polystyrene).
- polystyrene and polyolefin are preferred in that they are easy to introduce a linker such as an active halogen group for fixing an amino group to the polystyrene part, and in terms of ease of handling by chemical reinforcement by the polyolefin part and chemical resistance.
- Copolymers of are preferred.
- the polymer material may be blended or alloyed, and in particular, a polymer alloy of polystyrene and polyolefin (for example, a polymer alloy of polystyrene and polyethylene or a polymer alloy of polystyrene and polypropylene) has chemical resistance, It is preferable from the viewpoint of easily maintaining the physical shape.
- a polymer alloy of polystyrene and polypropylene which has been used in blood extracorporeal circulation therapy is preferable.
- the water insoluble carrier to be used does not have an amino group substantially.
- the nitrogen-containing compound may be directly linked to the water insoluble carrier or indirectly linked to the water insoluble carrier via a linker.
- the method for binding the nitrogen-containing compound to the water-insoluble carrier is not particularly limited, and examples thereof include a method for covalently bonding the surface of the water-insoluble carrier via a linker by a chemical method.
- the linker for example, a reactive functional group can be used.
- the linker one having an electrically neutral chemical bond such as an amide bond, a urea bond, an ether bond or an ester bond is preferable, and one having an amide bond or a urea bond is preferable.
- active halogen group such as halomethyl group, haloacetyl group, haloacetamidomethyl group or halogenated alkyl group, epoxy group, carboxyl group, isocyanate group, thioisocyanate group, or acid anhydride And the like.
- active halogen groups in particular, haloacetyl groups
- haloacetyl groups are easy to manufacture, have a suitably high reactivity, can perform the immobilization reaction of amino groups under mild conditions, and the resulting covalent bond is chemically stable. Because it is preferred.
- polystyrene having a chloroacetamidomethyl group added examples include polystyrene having a chloroacetamidomethyl group added, polysulfone having a chloroacetamidomethyl group added, and polyetherimide having a chloroacetamidomethyl group added.
- These polymers are soluble in organic solvents and have the advantage of being easy to mold.
- the standard of the addition amount of the nitrogen-containing compound depends on the structure of the linker, it is, for example, 10 to 10000 ⁇ mol per 1 g of the water-insoluble carrier. The nitrogen-containing compound may also be used in excess.
- the reactive functional group can be introduced in advance by reaction with a water insoluble carrier.
- a water insoluble carrier is polystyrene and the reactive functional group is chloroacetamidomethyl group
- polystyrene with chloroacetamidomethyl group can be obtained by reacting polystyrene with N-methylol- ⁇ -chloroacetamide. .
- the form of the water insoluble carrier is fibers or particles. Fibers are preferably used because they can increase the contact area with blood while securing the blood flow path.
- the sea-island composite fiber can arrange a polymer material that can easily fix the ligand in the sea portion while maintaining the fiber strength in the island portion, spinnability and the ligand fixation reaction can be easily achieved and is preferably used. .
- the diameter of the fibers or particles constituting the water-insoluble carrier is 15 to 50 ⁇ m.
- the reason / mechanism that the effect of the present embodiment can be obtained is presumed as follows. If the diameter of the fibers or particles is less than 15 ⁇ m, the packing density of the water-insoluble carrier in the column is high, and various cells such as platelets and white blood cells are likely to be trapped nonselectively. Further, among leukocytes, granulocytes and monocytes have a phagocytic ability, so when the diameter of fibers or particles is less than 15 ⁇ m, granulocytes and monocytes can easily recognize the water-insoluble carrier itself as a foreign substance.
- the diameter of the fibers or particles is larger than 50 ⁇ m, the blood contact area per unit volume of the water-insoluble carrier decreases, and the adsorption rate of LAP-positive leukocytes decreases.
- the diameter of fibers or particles constituting the water-insoluble carrier is required to be 15 to 50 ⁇ m. Note that the present embodiment is not limited by these assumptions.
- the diameter of the fibers or particles is preferably 17 ⁇ m or more, 20 ⁇ m or more, and 25 ⁇ m or more.
- the diameter of the fibers or particles is preferably 40 ⁇ m or less, 35 ⁇ m or less, and 30 ⁇ m or less. Any preferred lower limit may be combined with any preferred upper limit.
- the "fiber diameter” can be determined by the following method. First, randomly collect 100 fiber samples, and use a scanning electron microscope to take a photograph of a cross section (cross section perpendicular to the fiber extension direction) at a magnification of 1000 to 3000 for each sample. . Next, the diameter of each fiber cross section is measured. Then, the “diameter of fiber” is determined by calculating the average value of those values (the average value of the diameters of the total of 100 fiber cross sections). When the fiber cross section is not a circle, the diameter of a circle having the same area as the cross sectional area is taken as the diameter of the fiber.
- Particle diameter can be determined by the following method. First, 10 sample groups of particles are randomly taken, and one photograph is taken for each sample group at a magnification of 1000 to 3000 using a scanning electron microscope. Next, the diameter of 10 particles per photo is measured. Then, the “diameter of particle” is determined by calculating the average value of those values (the average value of the diameters of a total of 100 particles). When the photographic shape of the particles is not a circle, the diameter of a circle having the same area as the particle area is taken as the diameter of the particles.
- the arithmetic mean roughness of the surface of the water-insoluble carrier is 0.1 to 3.0 ⁇ m.
- the "arithmetic mean roughness” means a mean value of the absolute value of the deviation from the mean line of the removed portion to the measurement curve, which is extracted from the roughness surface by the reference length L in the direction of the mean line.
- the arithmetic mean roughness (Ra) of B 0601-2001 is meant.
- Arithmetic mean roughness can be measured, for example, with a shape measuring laser microscope. As a measurement environment, it is preferable to carry out with the water-insoluble carrier wet in water. Also, in the case of orientation like fibers, the value in the longitudinal direction is measured.
- the reason / mechanism that the effect of the present embodiment can be obtained is presumed as follows.
- the arithmetic mean roughness of the water-insoluble carrier surface is larger than 3.0 ⁇ m, it is easy for granulocytes and monocytes having phagocytic ability to recognize the unevenness of the water-insoluble carrier as foreign matter. Therefore, granulocytes and monocytes are easily adsorbed to the surface, and the selectivity of LAP positive leukocytes is lowered.
- the arithmetic mean roughness of the water-insoluble carrier surface is preferably 0.5 ⁇ m or more, 0.7 ⁇ m or more, 0.9 ⁇ m or more, and 1.0 ⁇ m or more.
- the arithmetic mean roughness of the water-insoluble carrier surface is preferably 2.0 ⁇ m or less, 1.8 ⁇ m or less, and 1.5 ⁇ m or less. Any preferred lower limit may be combined with any preferred upper limit.
- the preferred diameter of the fibers or the particles and the preferred arithmetic mean roughness of the surface of the water-insoluble carrier can be arbitrarily combined.
- the arithmetic mean roughness of the surface of the water-insoluble carrier is 0.1 to 3.0 ⁇ m
- platelet adhesion can also be suppressed. That is, when a nitrogen-containing compound is bound to a water-insoluble carrier, platelets tend to adhere, but when the surface of the water-insoluble carrier has an arithmetic mean roughness of 0.1 to 3.0 ⁇ m, platelets adhere. It is possible to suppress the tendency to
- the arithmetic mean roughness of the surface of the water-insoluble carrier can be controlled, for example, by immersing the water-insoluble carrier in an organic solvent.
- a method of controlling the arithmetic mean roughness of the surface of a water-insoluble carrier for example, a polymer obtained by kneading a polyaromatic vinyl compound and polypropylene as a water-insoluble carrier is partially dissolved in a polyaromatic vinyl compound And the method of immersing in the solvent which does not dissolve polypropylene is mentioned.
- the arithmetic mean roughness of the surface of the water-insoluble carrier can be controlled by the type of polymer, the molecular weight of the polymer, the type of solvent, the immersion temperature, the immersion time, and the like. Furthermore, as for polyaromatic vinyl, a method such as controlling the solubility in a solvent can also be adopted by introducing a crosslinking agent. Furthermore, it is also possible to carry out the above reaction simultaneously with the introduction reaction of the nitrogen-containing compound.
- Fiber is preferable in that it can increase the contact area with blood while securing the blood flow path by higher order processing.
- a sea-island composite fiber is preferable.
- a sea-island composite fiber in which an island is a reinforcing material and a sea is an alloy of a water insoluble polymer and a reinforcing material is preferable.
- a sea-island composite fiber is preferred, which is an alloy of polystyrene and polypropylene.
- the reinforcing material is not particularly limited, and examples thereof include polyamide, polyacrylonitrile, polyethylene, polypropylene, nylon, polymethyl methacrylate, polytetrafluoroethylene and the like. Among them, polypropylene is preferred. These polymers may be used alone or in combination of two or more.
- the shape of the water-insoluble carrier is a fiber
- it is preferably a knitted fabric which is a high-order product thereof.
- the knitted fabric can secure the blood flow path by controlling the stitches thereof, so that the pressure loss when blood passes through the fibers can be reduced.
- the number of combined yarns is preferably 10 to 100, and preferably 30 to 80.
- the number of filaments is 100 or less, LAP-positive leukocytes easily enter the fiber bundle, and the adsorption rate can be improved.
- the number of doubled yarns is 10 or more, the retention of the shape of the knitted fabric is improved.
- any preferable lower limit can be combined with any preferable upper limit.
- the adsorptive material of the present embodiment can be used as a carrier for adsorbing immunosuppressive leukocytes (particularly, LAP-positive leukocytes), and can be used as a filler for an adsorption column.
- the adsorption ratio of LAP-positive lymphocytes and monocytes is preferably 30% or more, preferably 35% or more, and more preferably 40% or more. Moreover, as the selectivity, in both lymphocytes and monocytes, the adsorption ratio of LAP-positive lymphocytes and monocytes is 2.5 or more times the adsorption ratio of LAP-negative lymphocytes and monocytes, respectively. Is preferably 5 times or more, and preferably 8 times or more.
- lymphocytes are intended to be CD4 positive leukocytes or CD8 positive leukocytes, and the above selectivity should be satisfied for either CD4 positive leukocytes or CD8 positive leukocytes, and CD4 positive leukocytes and CD8 positive leukocytes For both, it is desirable to satisfy the above selectivity.
- monocytes CD11b positive leukocytes are used.
- the batch type leukocyte adsorption test (for example, refer a present Example) using human blood is mentioned, for example.
- analysis by flow cytometry using a surface antigen of leukocytes as an index see, for example, this example) can be mentioned.
- the platelet adsorption ratio is preferably 80% or less, preferably 70% or less, and more preferably 65% or less.
- the platelet adsorption rate can be evaluated by batch tests and a hemocytometer as described above (see, for example, this example).
- the adsorption column of the present embodiment contains the adsorption material of the present embodiment.
- the "adsorption column” has at least a blood inlet, a case, and a blood outlet, and means a case filled with an adsorbent material.
- an adsorption column the radial flow type adsorption column is mentioned, for example.
- a fiber is preferable, and a knitted fabric is preferable.
- reference numeral 1 denotes a container main body, which has an inlet 2 and an outlet 3 at the front end and the rear end in the longitudinal direction.
- a filter 4 and a disc-like partition plate 5 are provided inside the inflow port 2
- a filter 6 and a disc-like partition plate 7 are provided inside the outflow port 3.
- an opening 5a is provided at the central portion of the front (inlet side) partition plate 5
- a support protrusion 7a is provided at the central portion of the rear partition plate 7. It is done.
- a large number of through holes 7 b are provided intermittently in the circumferential direction on the outer periphery of the partition plate 7.
- one pipe 8 is bridged between the opening 5 a of the partition plate 5 and the support projection 7 a of the partition plate 7.
- the pipe 8 has a flow passage 9 for guiding blood inside formed therein, and has a large number of through holes 10 in the peripheral wall.
- the pipe 8 communicates with the opening 5 a of the partition plate 5 at its front end, and the rear end is closed by the support projection 7 a of the partition plate 7.
- the adsorbing material 11 is wound in multiple layers on the outer periphery of the pipe 8 in multiple layers.
- this adsorption column When this adsorption column is used in a circulation method, a tube having a circulation circuit formed between it and the blood pool is connected to the inlet 2 and the outlet 3 and the blood taken out of the blood pool is supplied to the inlet 2 Then, the target adsorptive substance (immunosuppressive white blood cells) is removed by the internal adsorptive material 11, and it flows out from the outlet 3 and is circulated again to return to the blood pool.
- the blood that has entered the flow path 9 from the inflow port 2 through the filter 4 enters the adsorptive material 11 sequentially from the through holes 10 while moving in the flow path 9, and moves in any of the radial directions. Etc.
- the blood from which the cells and the like have been removed flows out from the large number of through holes 7 b on the outer periphery of the partition plate 7, passes through the filter 6, and flows out from the outlet 3.
- blood flows out of the through hole 10 while flowing through the flow path 9 in the pipe 8 from the opening 5a, but the moving direction of the blood in the adsorption column is reverse to the above. It may be supplied and let out from the inflow port 2.
- the blood linear velocity in the column is also important. That is, when the blood linear velocity is high, it may be difficult for LAP positive white blood cells to have sufficient interaction with the adsorptive material. On the other hand, when the blood linear velocity is low, other blood components such as platelets and proteins may be nonspecifically attached to the adsorptive material, which may inhibit the interaction between the adsorptive material and LAP positive leukocytes. Therefore, the maximum value of the linear velocity of blood in the adsorption material when the flow rate S in of the adsorption column inlet is 50 cm 3 / min is preferably 50 cm / min or less, and preferably 25 cm / min or less.
- the minimum value of the linear velocity of blood in the adsorption material when the flow rate at the inlet of the adsorption column is 50 cm 3 / min is preferably 0.1 cm / min or more, and 0.5 cm / min or more preferable.
- the blood linear velocity is determined by calculation.
- V max the maximum value of the blood linear velocity in the adsorbent material is on the side of the central pipe From the total area (S p ) of the opened openings and the flow rate S in (50 cm 3 / min) at the inlet of the adsorption column, the following equation 1 is calculated.
- V max (cm / min) S in (cm 3 / min) / S p (cm 2 ) formula 1
- V min the minimum value (V min ) is calculated by the following formula 2 from the area (S o ) of the outermost peripheral surface of the adsorption material wound around the central pipe and the flow velocity S in (50 cm 3 / min) at the inlet of the adsorption column.
- V min (cm / min) S in (cm 3 / min) / S o (cm 2 ) formula 2
- the maximum value and the minimum value are the same.
- a central pipe provided with through holes provided for draining the supplied blood on the side in the longitudinal direction, and an adsorptive material filled around the central pipe, and flowing A plate A in communication with the upstream end of the central pipe so as to pass through the central pipe, and arranged to prevent the blood from contacting the adsorptive material without passing through the central pipe;
- a radial flow adsorption column comprising a plate B arranged to seal the downstream end of the central pipe and to fix the adsorbent material in the space around the central pipe is preferred. This is for the blood to flow uniformly through the sphere-adsorbing material.
- the opening ratio of the through hole of the central pipe When the opening ratio of the through hole of the central pipe is low, pressure loss is likely to occur in this portion, so granulocytes, monocytes and platelets are activated, and these tend to adhere to the adsorption material. Therefore, the adsorption selectivity of LAP positive leukocytes may be reduced.
- the opening ratio of the through holes is preferably 20 to 80%, and more preferably 30 to 60%.
- Ring flow type refers to the flow of blood inside the column. When blood flows vertically at the inlet and outlet of the column, it is called radial flow if there is a horizontal blood flow inside the column.
- the “opening ratio of the through hole” means a value obtained by the following equation 3.
- Opening ratio of through hole (%) area of through hole formed on side of pipe in longitudinal direction / area of side of pipe ⁇ 100 Equation 3
- the adsorption column of the present embodiment can be used for blood purification therapy.
- immunosuppressive leukocytes can be selectively removed from blood.
- immunosuppressive white blood cells can be selectively removed from the blood by circulating the blood extracorporeally and passing it through the adsorption column of the present embodiment. That is, the adsorption column of the present embodiment can be used as a column for extracorporeal circulation.
- the adsorption column of the present embodiment can be used for treatment for selectively removing immunosuppressive leukocytes from the blood of cancer patients. That is, the adsorption column of the present embodiment can be used as a cancer treatment column.
- the adsorption column of the present embodiment can be used for cancer treatment because it can selectively remove immunosuppressive leukocytes. Moreover, it is also possible to use in combination with cell transfusion therapy that activates dendritic cells, natural killer cells and the like.
- the arithmetic average roughness of the surface of the water-insoluble carrier contained in the adsorbent material was measured by the following method.
- the surface of the adsorptive material is observed while being wet with water at 100 ⁇ magnification using a shape measuring laser microscope (manufactured by Keyence; color 3D laser microscope VK-9700), and the surface arithmetic mean The roughness was measured (in accordance with JIS B 0601-2001).
- the reference length L was 50 ⁇ m, and the average value of the absolute values of the deviation measured at 10 different positions was taken as the value of the surface arithmetic average roughness.
- the adsorption rate of immunosuppressive leukocytes of the adsorptive material was measured by a batch adsorption test using human blood.
- flow cytometry FACS Calibur, manufactured by Becton Dickinson was used for analysis.
- the LAP negative white blood cell count is a white blood cell not bound to LAP, and was calculated by subtracting the LAP positive white blood cell count from the white blood cell count.
- the white blood cell count is the sum of LAP positive white blood cell count and LAP negative white blood cell count.
- Fiber diameter was determined by the following method. First, 100 fiber samples were randomly taken, and a photograph of a cross section (cross section perpendicular to the fiber extension direction) was taken at a magnification of 3000 using a scanning electron microscope, one for each sample. Next, the diameter of each fiber cross section was measured. Then, the “diameter of fiber” was determined by calculating the average value of those values (the average value of the diameters of the total of 100 fiber cross sections). When the fiber cross section is not a circle, the diameter of a circle having the same area as the cross sectional area is taken as the diameter of the fiber.
- Original knitted fabric 1 and intermediate 1 As a water-insoluble carrier, it has 16 islands consisting of polypropylene (Prime Polymer Co., Ltd .; J105 WT), and the sea component is 90 wt% of polystyrene (weight average molecular weight: 181,000) and polypropylene (Prime Polymer Co., Ltd .; J105 WT) A sea-island composite fiber (fiber diameter: 20 ⁇ m) was spun, which consisted of 10% by weight, and the ratio of island to sea (weight ratio) was 50:50.
- the obtained 42 fibers were doubled to form a knitted fabric (hereinafter, original knitted fabric 1).
- the roughness of the fiber surface is influenced by the number of islands, the ratio of islands to islands, the molecular weight of polystyrene and polypropylene, and the like.
- PFA Paraformaldehyde
- PFA solution a mixed solution of nitrobenzene (50 mL) and sulfuric acid (32 mL).
- N-methylol- ⁇ -chloroacetamide (18 g) was dissolved at 10 ° C. in a mixed solution of nitrobenzene (50 mL) and sulfuric acid (32 mL) (hereinafter, NMCA solution).
- NMCA solution N-methylol- ⁇ -chloroacetamide
- Original knitted fabric 2 and intermediate 2 As a water insoluble carrier, it has a core component consisting of polypropylene (Prime Polymer Co., Ltd .; J105 WT), and a sheath component is 90 wt% of polystyrene (weight average molecular weight: 261,000) and 10 wt% of polypropylene (Prime Polymer Co., Ltd .; J105 WT) Core-sheath composite fibers (fiber diameter: 5 .mu.m) having a core to sheath ratio (weight ratio) of 50:50. The obtained 42 fibers were doubled to form a knitted fabric (hereinafter, original knitted fabric 2).
- original knitted fabric 2 As a water insoluble carrier, it has a core component consisting of polypropylene (Prime Polymer Co., Ltd .; J105 WT), and a sheath component is 90 wt% of polystyrene (weight average molecular weight: 261,000) and 10 wt% of poly
- Original knitted fabric 3 and intermediate 3 As a water insoluble carrier, it has 16 islands consisting of polypropylene (Prime Polymer Co., Ltd .; J105WT), the sea component consists of polystyrene (weight average molecular weight: 261,000), and the ratio of island to sea (weight ratio) is Sea-island composite fibers (fiber diameter: 20 ⁇ m) at 30:70 were spun. The obtained 42 fibers were doubled to form a knitted fabric (hereinafter, original knitted fabric 3).
- polypropylene Principal Polymer Co., Ltd .; J105WT
- the sea component consists of polystyrene (weight average molecular weight: 261,000)
- the ratio of island to sea (weight ratio) is Sea-island composite fibers (fiber diameter: 20 ⁇ m) at 30:70 were spun.
- the obtained 42 fibers were doubled to form a knitted fabric (hereinafter, original knitted fabric 3).
- intermediate 3 an ⁇ -chloroacetamidomethylated knitted fabric
- Original knitted fabric 4 and intermediate 4 As a water insoluble carrier, it has a core component consisting of polypropylene (Prime Polymer Co., Ltd .; J105 WT), and a sheath component is 90 wt% of polystyrene (weight average molecular weight: 261,000) and 10 wt% of polypropylene (Prime Polymer Co., Ltd .; J105 WT) Core-sheath composite fibers (fiber diameter: 10 .mu.m) were spun at a core to sheath ratio (weight ratio) of 50:50. The obtained 42 fibers were doubled to form a knitted fabric (hereinafter, original knitted fabric 4).
- a sheath component is 90 wt% of polystyrene (weight average molecular weight: 261,000) and 10 wt% of polypropylene (Prime Polymer Co., Ltd .; J105 WT)
- Core-sheath composite fibers (fiber diameter: 10 .mu.m
- intermediate 4 an ⁇ -chloroacetamidomethylated knitted fabric
- Original knitted fabric 5 and intermediate 5 As a water insoluble carrier, it has 16 islands consisting of polypropylene (Prime Polymer Co., Ltd .; J105WT), the sea component consists of polystyrene (weight average molecular weight: 261,000), and the ratio of island to sea (weight ratio) is Sea-island composite fibers (fiber diameter: 40 ⁇ m) at 50: 50 were spun. The obtained 42 fibers were doubled to form a knitted fabric (hereinafter, original knitted fabric 5).
- polypropylene Principal Polymer Co., Ltd .; J105WT
- the sea component consists of polystyrene (weight average molecular weight: 261,000)
- the ratio of island to sea (weight ratio) is Sea-island composite fibers (fiber diameter: 40 ⁇ m) at 50: 50 were spun.
- the obtained 42 fibers were doubled to form a knitted fabric (hereinafter, original knitted fabric 5).
- intermediate 5 an ⁇ -chloroacetamidomethylated knitted fabric
- Original knitted fabric 6 and intermediate 6 As a water insoluble carrier, it has 16 islands consisting of polypropylene (Prime Polymer Co., Ltd .; J105WT), the sea component consists of polystyrene (weight average molecular weight: 261,000), and the ratio of island to sea (weight ratio) is Sea-island composite fibers (fiber diameter: 50 ⁇ m) at 50: 50 were spun. The obtained 42 fibers were doubled to form a knitted fabric (hereinafter, original knitted fabric 6).
- polypropylene Principal Polymer Co., Ltd .; J105WT
- the sea component consists of polystyrene (weight average molecular weight: 261,000)
- the ratio of island to sea (weight ratio) is Sea-island composite fibers (fiber diameter: 50 ⁇ m) at 50: 50 were spun.
- the obtained 42 fibers were doubled to form a knitted fabric (hereinafter, original knitted fabric 6).
- intermediate 6 an ⁇ -chloroacetamidomethylated knitted fabric
- Example 2 Intermediate 1 (10 g) was immersed in a solution of tetraethylenepentamine (hereinafter TEPA) (1640 ⁇ L) and triethylamine (28.6 mL) in dimethyl sulfoxide (398 mL) with stirring at room temperature for 1 hour. . Thereafter, Intermediate 1 treated with tetraethylenepentamine was washed with water and dried to obtain an adsorption material E2.
- TEPA tetraethylenepentamine
- Example 3 The same treatment as in Example 1 was performed except that the immersion time was 10 minutes, to obtain an adsorption material E3.
- Example 4 The same processing as in Comparative Example 3 was performed except that the immersion time was 2 hours, to obtain an adsorption material E4.
- Example 5 The same treatment as in Example 1 was carried out except using Intermediate 5 instead of Intermediate 1, to obtain an adsorptive material E5.
- Example 6 The same treatment as in Example 1 was carried out except using Intermediate 6 instead of Intermediate 1, to obtain an adsorbing material E6.
- Example 5 The same treatment as in Example 1 was performed except that the immersion time was 3 minutes, to obtain an adsorption material C5.
- Example 7 The same treatment as in Comparative Example 3 was carried out except that the immersion time was 1 hour, to obtain an adsorption material E7.
- the adsorptive material and the adsorptive column of the present embodiment can adsorb immunosuppressive leukocytes. Therefore, application to cancer treatment is expected.
- the adsorption material and the adsorption column of the present embodiment can be used in combination with a cell transfusion treatment that activates dendritic cells, natural killer cells, and the like.
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Abstract
Description
[1]以下の式(1)で表されるポリアミン、以下の式(2)で表される第1級脂肪族アミン及び式(3)で表される第2級脂肪族アミンから選択される1種以上の窒素含有化合物が結合した水不溶性担体を含み、
上記水不溶性担体の形状が繊維又は粒子であり、上記繊維又は上記粒子の直径が15~50μmであり、上記水不溶性担体の表面の算術平均粗さが0.1~3.0μmである、免疫抑制性白血球の吸着材料。
R1R2N-X-NR3R4 ・・・式(1)
[式(1)中、Xは、2~20個の炭素原子を有する飽和若しくは不飽和の脂肪族炭化水素基、又は、3~20個の炭素原子を有する飽和若しくは不飽和の脂肪族炭化水素基において1~5個の炭素原子を窒素原子で置き換えたヘテロ原子含有炭素鎖であり、該窒素原子に結合する水素原子は、アミノ基を有していてもよいアルキル基で置換されていてもよく、R1~R4は、それぞれ独立に、水素原子又はアルキル基である。]
NH2R5 ・・・式(2)
[式(2)中、R5は、1~12個の炭素原子を有する飽和又は不飽和の脂肪族炭化水素基である。]
NHR6R7 ・・・式(3)
[式(3)中、R6及びR7は、それぞれ独立して、1~12個の炭素原子を有する飽和又は不飽和の脂肪族炭化水素基である。]
[2] 上記窒素含有化合物は、上記式(1)で表されるポリアミンを含む、[1]に記載の吸着材料。
[3] 上記窒素含有化合物は、リンカーを介して上記水不溶性担体に結合している、[1]又は[2]に記載の吸着材料。
[4] 上記水不溶性担体の形状は、繊維である、[1]~[3]のいずれかに記載の吸着材料。
[5] 上記免疫抑制性白血球は、LAP陽性リンパ球又はLAP陽性単球である、[1]~[4]のいずれかに記載の吸着材料。
[6] [1]~[5]のいずれかに記載の吸着材料を備える、吸着カラム。
[7] 血液浄化療法に用いるための、[6]に記載の吸着カラム。
[式(1)中、Xは、2~20個の炭素原子を有する飽和若しくは不飽和の脂肪族炭化水素基、又は、3~20個の炭素原子を有する飽和若しくは不飽和の脂肪族炭化水素基において1~5個の炭素原子を窒素原子で置き換えたヘテロ原子含有炭素鎖であり、該窒素原子に結合する水素原子は、アミノ基を有していてもよいアルキル基で置換されていてもよく、R1~R4は、それぞれ独立に、水素原子又はアルキル基である。]。
H2N-(CH2)p1-NH2 ・・・式(1-1)
[式(1-1)中、p1は、2~12(好ましくは2~6、2~5又は2~4)の整数であり、両末端の1級アミノ基の水素原子のうち少なくとも1つはアルキル基で置換されていてもよい。]、
H2N-(CH2)p1-NH-(CH2)p2-NH2 ・・・式(1-2)
[式(1-2)中、p1及びp2は、それぞれ独立に、2~5(好ましくは2~4、2~3、2)の整数であり、2級アミノ基の水素原子は、アミノ基を有していてもよいアルキル基で置換されていてもよく、両末端の1級アミノ基の水素原子のうち少なくとも1つはアルキル基で置換されていてもよい。]、
H2N-(CH2)p1-NH-(CH2)p2-NH-(CH2)p3-NH2 ・・・式(1-3)
[式(1-3)中、p1、p2及びp3は、それぞれ独立に、2~5(好ましくは2~4、2~3、2)の整数であり、2級アミノ基の水素原子は、それぞれ独立に、アミノ基を有していてもよいアルキル基で置換されていてもよく、両末端の1級アミノ基の水素原子のうち少なくとも1つはアルキル基で置換されていてもよい。]、
H2N-(CH2)p1-NH-(CH2)p2-NH-(CH2)p3-NH-(CH2)p4-NH2 ・・・式(1-4)
[式(1-4)中、p1、p2、p3及びp4は、それぞれ独立に、2~5(好ましくは2~4、2~3、2)の整数であり、p1、p2、p3及びp4の和は17以下であり、2級アミノ基の水素原子は、それぞれ独立に、アミノ基を有していてもよいアルキル基で置換されていてもよく、両末端の1級アミノ基の水素原子のうち少なくとも1つはアルキル基で置換されていてもよい。]、
H2N-(CH2)p1-NH-(CH2)p2-NH-(CH2)p3-NH-(CH2)p4-NH-(CH2)p5-NH2 ・・・式(1-5)
[式(1-5)中、p1、p2、p3、p4及びp5は、それぞれ独立に、2~5(好ましくは2~4、2~3、2)の整数であり、p1、p2、p3、p4及びp5の和は16以下であり、2級アミノ基の水素原子は、それぞれ独立に、アミノ基を有していてもよいアルキル基で置換されていてもよく、両末端の1級アミノ基の水素原子のうち少なくとも1つはアルキル基で置換されていてもよい。]、
H2N-(CH2)p1-NH-(CH2)p2-NH-(CH2)p3-NH-(CH2)p4-NH-(CH2)p5-NH-(CH2)p6-NH2 ・・・式(1-6)
[式(1-6)中、p1、p2、p3、p4、p5及びp6は、それぞれ独立に、2~5(好ましくは2~4、2~3、2)の整数であり、p1、p2、p3、p4、p5及びp6の和は15以下であり、2級アミノ基の水素原子は、それぞれ独立に、アミノ基を有していてもよいアルキル基で置換されていてもよく、両末端の1級アミノ基の水素原子のうち少なくとも1つはアルキル基で置換されていてもよい。]。
NH2R5 ・・・式(2)
[式(2)中、R5は、1~12個の炭素原子を有する飽和又は不飽和の脂肪族炭化水素基である。]、
NHR6R7 ・・・式(3)
[式(3)中、R6及びR7は、それぞれ独立して、1~12個の炭素原子を有する飽和又は不飽和の脂肪族炭化水素基である。]。
Vmax(cm/分)= Sin(cm3/分)/Sp(cm2)・・・式1
Vmin(cm/分)= Sin(cm3/分)/So(cm2)・・・式2
本実施例において、吸着材料に含まれる水不溶性担体の表面の算術平均粗さを以下の方法により測定した。
形状測定レーザー顕微鏡(キーエンス社製;カラー3Dレーザー顕微鏡 VK-9700)を用いて、100倍の倍率で、乾燥させないように水に濡れた状態で、吸着材料の表面を観察し、表面の算術平均粗さを測定した(JIS B 0601-2001準拠)。基準長さLは50μmとし、位置が異なる10箇所で測定した偏差の絶対値の平均値を表面の算術平均粗さの値とした。なお、水に濡れた状態としては、水分率(水分率=100×水分重量/材料重量)が20%以上である状態が好ましい。
本実施例において、吸着材料の免疫抑制性白血球の吸着率を、ヒト血液を用いたバッチ吸着試験により測定した。また、分析にはフローサイトメトリー(FACS Calibur、ベクトン・ディッキンソン社製)を用いた。
吸着率は、下記式により算出した。
吸着率(%)=(吸着材料を添加していない血液でのLAP陽性白血球数-吸着材料を添加した血液でのLAP陽性白血球数)/吸着材料を添加していない血液でのLAP陽性白血球数×100
免疫抑制性白血球の吸着試験と同じ実験系で、血小板の付着率についても算出した。血小板数は血球計測器により測定した。
血小板の付着率を下記式により算出した。
血小板の付着率(%)=(吸着材料を添加していない血液での血小板数-吸着材料を添加した血液での血小板数)/吸着材料を添加していない血液での血小板数×100
「繊維の直径」は、以下の方法により求めた。まず、繊維のサンプル100本をランダムに採取して、走査型電子顕微鏡を用いて3000の倍率で断面(繊維の伸長方向に垂直な断面)の写真をサンプル1本につきそれぞれ1枚撮影した。次に、それぞれの繊維断面の直径を測定した。そして、それらの値の平均値(計100本の繊維断面の直径の平均値)を算出することにより、「繊維の直径」を求めた。繊維断面が円でない場合は、その断面積と同じ面積を有する円の直径を繊維の直径とした。
(1)原編み地1及び中間体1
水不溶性担体として、ポリプロピレン(株式会社プライムポリマー;J105WT)からなる島成分を16島有し、海成分がポリスチレン(重量平均分子量:181,000)90重量%及びポリプロピレン(株式会社プライムポリマー;J105WT)10重量%からなり、島と海の比率(重量比)が50:50である、海島複合繊維(繊維の直径:20μm)を紡糸した。得られた繊維42本を合糸して編み地を形成した(以下、原編み地1)。なお、繊維表面の粗さは、島数や海島比率、ポリスチレンやポリプロピレンの分子量等によって影響を受ける。
水不溶性担体として、ポリプロピレン(株式会社プライムポリマー;J105WT)からなる芯成分を有し、鞘成分がポリスチレン(重量平均分子量:261,000)90重量%及びポリプロピレン(株式会社プライムポリマー;J105WT)10重量%からなり、芯と鞘の比率(重量比)が50:50である、芯鞘複合繊維(繊維の直径:5μm)を紡糸した。得られた繊維42本を合糸して編み地を形成した(以下、原編み地2)。
水不溶性担体として、ポリプロピレン(株式会社プライムポリマー;J105WT)からなる島成分を16島有し、海成分がポリスチレン(重量平均分子量:261,000)からなり、島と海の比率(重量比)が30:70である、海島複合繊維(繊維の直径:20μm)を紡糸した。得られた繊維42本を合糸して編み地を形成した(以下、原編み地3)。
水不溶性担体として、ポリプロピレン(株式会社プライムポリマー;J105WT)からなる芯成分を有し、鞘成分がポリスチレン(重量平均分子量:261,000)90重量%及びポリプロピレン(株式会社プライムポリマー;J105WT)10重量%からなり、芯と鞘の比率(重量比)が50:50である、芯鞘複合繊維(繊維の直径:10μm)を紡糸した。得られた繊維42本を合糸して編み地を形成した(以下、原編み地4)。
水不溶性担体として、ポリプロピレン(株式会社プライムポリマー;J105WT)からなる島成分を16島有し、海成分がポリスチレン(重量平均分子量:261,000)からなり、島と海の比率(重量比)が50:50である、海島複合繊維(繊維の直径:40μm)を紡糸した。得られた繊維42本を合糸して編み地を形成した(以下、原編み地5)。
水不溶性担体として、ポリプロピレン(株式会社プライムポリマー;J105WT)からなる島成分を16島有し、海成分がポリスチレン(重量平均分子量:261,000)からなり、島と海の比率(重量比)が50:50である、海島複合繊維(繊維の直径:50μm)を紡糸した。得られた繊維42本を合糸して編み地を形成した(以下、原編み地6)。
(実施例1)
ジエチレントリアミン(以下、DETA)(929μL)とトリエチルアミン(28.6mL)をジメチルスルホキシド(398mL)に溶かした溶液に、中間体1(10g)を、室温にて1時間撹拌下で浸漬させた。その後、ジエチレントリアミンで処理した中間体1を水洗いし、乾燥させ、吸着材料E1を得た。
テトラエチレンペンタミン(以下、TEPA)(1640μL)とトリエチルアミン(28.6mL)をジメチルスルホキシド(398mL)に溶かした溶液に、中間体1(10g)を、室温にて1時間撹拌下で浸漬させた。その後、テトラエチレンペンタミンで処理した中間体1を水洗いし、乾燥させ、吸着材料E2を得た。
原編み地1を吸着材料C1として使用した。
中間体1の代わりに中間体2を用いたこと以外は、実施例1と同様の処理を行い、吸着材料C2を得た。
ジエチレントリアミン(DETA)(929μL)とトリエチルアミン(28.6mL)をジメチルスルホキシド(398mL)に溶かした溶液に、中間体3(10g)を浸し、80℃に加温して10時間撹拌下で浸漬させた。その後、ジエチレントリアミンで処理した編み地を水洗いし、乾燥させ、吸着材料C3を得た。
浸漬時間を10分にしたこと以外は、実施例1と同様の処理を行い、吸着材料E3を得た。
浸漬時間を2時間にしたこと以外は、比較例3と同様の処理を行い、吸着材料E4を得た。
中間体1の代わりに中間体4を用いたこと以外は、実施例1と同様の処理を行い、吸着材料C4を得た。
中間体1の代わりに中間体5を用いたこと以外は、実施例1と同様の処理を行い、吸着材料E5を得た。
中間体1の代わりに中間体6を用いたこと以外は、実施例1と同様の処理を行い、吸着材料E6を得た。
浸漬時間を3分にしたこと以外は、実施例1と同様の処理を行い、吸着材料C5を得た。
浸漬時間を1時間にしたこと以外は、比較例3と同様の処理を行い、吸着材料E7を得た。
CD4(+):CD4陽性
CD8(+):CD8陽性
CD11b(+):CD11陽性
LAP(+): Latency Associated Peptide陽性
LAP(-): Latency Associated Peptide陰性
DETA:ジエチレントリアミン
TEPA:テトラエチレンペンタミン
2 流入口
3 流出口
4 フィルター
5 仕切板
5a 仕切板の開口
6 フィルター
7 仕切板
7a 仕切板の支持突起
7b 仕切板の透孔
8 パイプ
9 流路
10 貫通孔
11 吸着材料
Q 血液流れ
Claims (7)
- 以下の式(1)で表されるポリアミン、以下の式(2)で表される第1級脂肪族アミン及び式(3)で表される第2級脂肪族アミンから選択される1種以上の窒素含有化合物が結合した水不溶性担体を含み、
前記水不溶性担体の形状が繊維又は粒子であり、前記繊維又は前記粒子の直径が15~50μmであり、前記水不溶性担体の表面の算術平均粗さが0.1~3.0μmである、免疫抑制性白血球の吸着材料。
R1R2N-X-NR3R4 ・・・式(1)
[式(1)中、Xは、2~20個の炭素原子を有する飽和若しくは不飽和の脂肪族炭化水素基、又は、3~20個の炭素原子を有する飽和若しくは不飽和の脂肪族炭化水素基において1~5個の炭素原子を窒素原子で置き換えたヘテロ原子含有炭素鎖であり、該窒素原子に結合する水素原子は、アミノ基を有していてもよいアルキル基で置換されていてもよく、R1~R4は、それぞれ独立に、水素原子又はアルキル基である。]
NH2R5 ・・・式(2)
[式(2)中、R5は、1~12個の炭素原子を有する飽和又は不飽和の脂肪族炭化水素基である。]
NHR6R7 ・・・式(3)
[式(3)中、R6及びR7は、それぞれ独立して、1~12個の炭素原子を有する飽和又は不飽和の脂肪族炭化水素基である。] - 前記窒素含有化合物は、前記式(1)で表されるポリアミンを含む、請求項1記載の吸着材料。
- 前記窒素含有化合物は、リンカーを介して前記水不溶性担体に結合している、請求項1又は2記載の吸着材料。
- 前記水不溶性担体の形状は、繊維である、請求項1~3のいずれか一項記載の吸着材料。
- 前記免疫抑制性白血球は、LAP陽性リンパ球又はLAP陽性単球である、請求項1~4のいずれか一項記載の吸着材料。
- 請求項1~5のいずれか一項記載の吸着材料を備える、吸着カラム。
- 血液浄化療法に用いるための、請求項6に記載の吸着カラム。
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WO2021066152A1 (ja) | 2019-10-04 | 2021-04-08 | 東レ株式会社 | 血液処理材料 |
WO2023074729A1 (ja) | 2021-11-01 | 2023-05-04 | 東レ株式会社 | 細胞吸着材料、及び細胞吸着カラム |
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- 2018-09-07 JP JP2018554423A patent/JP7193085B2/ja active Active
- 2018-09-07 CN CN201880054419.1A patent/CN111278483B/zh active Active
- 2018-09-07 US US16/638,570 patent/US20200215253A1/en not_active Abandoned
- 2018-09-07 BR BR112020003093-7A patent/BR112020003093A2/pt not_active Application Discontinuation
- 2018-09-07 EP EP18852826.9A patent/EP3679964A4/en active Pending
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2020163380A (ja) * | 2019-03-29 | 2020-10-08 | 東レ株式会社 | ホモセリン誘導体の吸着材料 |
JP7347288B2 (ja) | 2019-03-29 | 2023-09-20 | 東レ株式会社 | ホモセリン誘導体の吸着材料 |
WO2021066152A1 (ja) | 2019-10-04 | 2021-04-08 | 東レ株式会社 | 血液処理材料 |
CN114423470A (zh) * | 2019-10-04 | 2022-04-29 | 东丽株式会社 | 血液处理材料 |
EP4039327A4 (en) * | 2019-10-04 | 2023-11-29 | Toray Industries, Inc. | BLOOD TREATMENT MATERIAL |
JP7497682B2 (ja) | 2019-10-04 | 2024-06-11 | 東レ株式会社 | 血液処理材料 |
WO2023074729A1 (ja) | 2021-11-01 | 2023-05-04 | 東レ株式会社 | 細胞吸着材料、及び細胞吸着カラム |
Also Published As
Publication number | Publication date |
---|---|
BR112020003093A2 (pt) | 2020-08-25 |
JP7193085B2 (ja) | 2022-12-20 |
US20200215253A1 (en) | 2020-07-09 |
KR20200051578A (ko) | 2020-05-13 |
JPWO2019049962A1 (ja) | 2020-08-27 |
CN111278483B (zh) | 2022-03-01 |
EP3679964A4 (en) | 2021-06-02 |
AU2018329887A1 (en) | 2020-02-20 |
CN111278483A (zh) | 2020-06-12 |
CA3072044A1 (en) | 2019-03-14 |
EP3679964A1 (en) | 2020-07-15 |
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